Typewriting machine



Feb. 4, 1941. P. A. JACKSON 2,230,459

TYPEWRITING MACHINE Filed Feb. 1, 1938 3 Sheets-Sheet 1 INVENTOR (IT/ M M Patented Feb. 4, 1941 UNITED STATES PATENT OFFlCE 2,230,459 'rvrswmmc moms Philip A. Jackson, Dayton, Ohio Application February 1, 1938, Serial No. 188,121

6 Claims. (Cl. 197-153) This invention relates to typewrlting machines specially designed to type forms on webs of paper.

One object of this invention is to provide endless strips of carbon crosswise paper webs and means to shift the carbon strips so as to utilize the larger part of the strips.

Another object is to provide for manual advancement of the carbon strips along the typing line.

- Another object is to provide above the platen web advancing means and web aligning means.

Another object is to provide an ample supply of carbon strips and means to hold the carbons in constant tension.

Another object is to provide the carbon strips at one edge with a narrow fold and rounded edge which folds tends to prevent'entanglement of the webs with the carbon strips.

Another object is to provide means to free the webs from pressure against the platen while the webs are being advanced.

Another obiect is to provide means to change from continuous forms typing to ordinary typing and the reverse.

.Another object is to provide a unit combination of the web advancing means, and the aligning means, and the means to spread gripper rollers, and the means to release the webs from pressure against the platen;

A further object is to provide automatic means to advance the carbon strips by the operation of the machine.

Another object is to provide a sectional strip of carbon reinforced on one edge with a metal strip.

In the drawings herewith Fig. 1 is a side view of the machine showing the mechanism of my invention.

Fig. 2 is a top view of the carbon strip supply arrangement, showing the carbon strip tension spring and a section of the web feed gripper roll-.

ers.

Fig. 3 shows the end of the platen carriage and the web feed meansin an elevated position, the

1 way to guide webs from the rear of ment, the aligning blade and the means to release the paper webs from pressure against the platen. 7

Figures 7 and 8 show a fold on one edge of the carbon strip and the rounded edge of the strip produced by the fold. 1

Figures 9, 10 and 11 show a sectional carbon strip reinforced on one edge by a metal strip.

Fig. 12 is a section on the line l2-l2 of Fig. and shows the cams on the feed roller shafts to spread the feed rollers.

Fig. 13'is a sectional view of the means to release the webs from pressure against the platen.

Figures 14, 15 and 16 relate to a modified form of the machine.

Fig. 14 is a top view of a section of the modified form showing the relation of the platen to the carbon strip supply roll. and the carbon strip feed rollers.

Fig. 15 is a front view of a section of the modifled form showing means to feed the carbon strips across machine.

Fig, 16 is an end view of the platen carriage of the modified form showing carbon strip roll support and the tension spring.

Fig. 17 is a sectional view of the mechanism to operate the carbon strip feed rollers of the modified form.

I have shown four embodiments of my machine, but it will be understood they are only for illustration and that the' mechanism may take any form within the scope of the invention. 1' make no claim to the conventional typewriter per se and only show such parts of typewriter as are necessary to show my invention and mechanism.

In the construction disclosed, I represents a typewriter not shown in full detail. Platen carriage 3 is reciprocated in a V-shape track on base 2. End plates 4 are fixed to the end of platen carriage as at 35. as shown in Fig. 1. Paper web advancing gripper rollers I and l are mounted in openings in the forward end of the hinged part it at 8 as shown in Fig. 2. The parts 5| are hinged to the rear part of end plate 4 at 85 and the front end of parts "normally rests on projection it toward the front end of end plate 4.

The feed rollers 5 and I are provided with studs at their ends and the openings 9 for studs of roller I are alotted to allow for spreading the rollers out of gripping contact. The feed rollers are held in gripping contact by springs I. which are fixed at one end to plate 8 and the other ends of springs are attached to the rear part of hinge part 5| at II, as shown in Fig. 1. The forward end of plate I is fixed to projecting stud ends of roller 5. The openings in the rear end of plate I is slotted to allow for free movement of plate l about studs on roller 1 in gripping or spreading of gripper rollers. Feed rollers are actuated by knob 51. Feed rollers are mounted so as to feed webs vertically. It is desirable to provide for a liberal supply of carbon strips and for that purpose I provide a carbon strip roll II. The carbon strips are wound on a spool and rotatably mounted in carbon roll supports II on stud ends of spool in openings 33. Carbon roll supports I1 is fixed to a slide part l4 and is slidably mounted in slide track Is fixed on end plate 4 as shown in Fig. 2. Carbon roll Isis held in position by spring 23 fixed at one end to cover part 32 and the other end at 23 to part 24 fixed to and turned out from end plate 4. Cover part 32 is hinged to turned out part 14 at 22. In order to utilize the full width of carbon strips I provide thumb screw 23 which is threaded into part 30 turned out from end plate 4. The end of thumb screwis fixed rotatably by headed stud 64 to 3| a part turned out from carbon support slide part II. as shown in Figs. 1 and 6. By the thumb screw carbon strip may be moved up or down as desired to utilize the larger part of carbon strips. It is essential in typing continuous forms to hold carbon strips taut to prevent carbon strips and paper, webs from entanglement and tearing as folded perforated ends of forms and file holes and nicks in papers are advanced across the carbon strips. For this purpose I provide a fiat spring 33 as shown in Fig. 1 fixed to upper part of end plate 4 above carbon roll I! at 34. The spring 33 at the forward end is turned down at right angles a length to correspond with the width of carbon strip. The free end of spring 33 is bent outwardly from plate 4 as shown in Figs. 2 and 5. Between the turned down part of spring 33 and the carbon roll i5 is another fiat spring 28 loosely hinged near top of plate 4 on a bracket 2!. The spring N is bowed with the vertex toward end plate 4. After carbon strips are drawn out in lengths sufllcient to cross the front of the machine the spring 26 is pressed down on carbon strip against plate 4 and made fast under hook 21 fixed to lower part of end plate 4. Lower end of spring 26 extends below hook 21 so it may be fingered into or out of the hook. After carbon strips are thus held fast by spring 26 the free end of carbon strips are drawn tightly over the turned down free end of spring 33 across machine and between paper webs, and the free end of strips are made fast by eccentric roller cam 12 as shown in Fig. 6, which cam 12 is pivotally mounted at it in parts 13 fixed on to and turned inwardly from plate 4. Cam l2 is manipulated by projection 62 as shown in Fig. 5. It is apparent that a cam similar to cam 12 may be substituted for spring 24. As carbon strips are drawn taut spring 33 is pressed toward end plate 4 and by its reaction holds the strips in constant-tension against creeping or stretching during typing operation. To add strength and protection to carbon strips against marring by advancing webs I provide a narrow fold H as shown in Figs. '1, 8 and 9. The carbon strips are mounted in machine with the rounded edge toward advancing webs. The rounded edge protects both carbon strips and the creased ends of forms catching and entangling each other. Raw or unprotected edges of carbon strips crosswise forms cause serious and endless trouble in operating machines of the kind. To thread machines with form sheets and carbon strips it is necessary to spread gripper rollers for which I provide cams l2 shown in Fig. 13, mounted rotatably on shaft of feed roller 1 at B3. Cams 52 are attached to common part '4 and operated by finger part I! to spread the gripper rollers. The position of cams I1 is shown by l3l3 shown in Fig. {5. The cut away part of feed roller I indicates position of cam I! when feed rollers are spread apart. In typing letters or multiple forms it is necessary to press sheets close to platen for which I provide spring part 30, but when advancing continuous forms with carbom strips crosswise forms it is necessary to free the sheets from pressure of 6B. Forthis purpose I provide a thin metal part 59 across machine in the rear of the top part of 60. The part 59 is attached to parts 58 rotatably mounted on andnearthe endsof roller shaft 5 and between paper webs and part 43 as shpwn in F g. 6. The rocking part 59 has a turned down finger part below and near the knob 51 which knob is used to operate feed rollers. when 51 is operated by thumb and forefinger one finger naturally restsagainst turned down part is and slight pressure of finger on 59 presses it! away from platen as feed rollers advance forms. By this means form pass carbon strips more freely preventing entanglement of forms and carbon strips and tearing of sheets or carbon strips by the perforated fold crease of forms, file hole and nicks in paper. There is no lost motion in the operation to release the forms from pressure of part" as the feed roller advancement, and the release operation is simultaneous, and as soon as knob 51 is released forms are pressed by 43 against platen ready for typing.

In typing multiple continuous forms it is necessary to have means to align forms which is often complicated and not successful. I provide a simple and practical means. An aligning blade 33 is mounted on the top of hinged part 51 at 43 as shown in Figs. 3 and 6. The blade 39 is'in line with the contact line of gripper rollers but slightly in the rear of form passage upwardly from feed rollers. When forms are typed and ready to be severed they are advanced until perforated fold creases are in line with edge of aligning blade 39. Then the forms are released from gripper roller contact 50 they may shift freely and are bent rearwardly along creased line of form fold on aligning blade 39 as shown in Fig. 1. When multiple forms are refolded, or bent along perforated lines to right angles or more, they are forced into. alignment which demonstrate the simplicity of the aligning blade. In advancing paper webs only the length of one set of forms the creeping of webs is very slight and by aligning each set of forms as they are typed the alignment is perfectly maintained, and by the simple aligning blade means it may be done very quickly. The typing of continuous forms with carbon crosswise forms avoids the usual slow processof placing single sets of forms and carbon sheets in machine after each operation, or the reciprocating of forms and carbon in the usual method of typing continuous forms. When carbon strips are worn and need renewing the strips may be released from spring 24 and cam 12 and drawn out toward the right of machine supplying fresh carbon strips between the webs of paper, and the used ends discarded. At the lower end of plate 4 guide idler 43 is mounted at 44 with a front line of guide 43 in line with front of platen 41. Websof paper are threaded into machine over guide 44 at top rear of typewriter, thence under platen and under guide roller 43, then gripper roller unit being elevated as shown in Fig. 3, forms are carried in a straight line up to typing position. With the feed rollers elevated and out of the way the carbon strips may be conveniently placed between forms and made fast in carbon strip mechanism. After the carbons are placed between forms the feed rollers being spread apart may be lowered and the end of forms guided between the rollers which then may be gripped ready for the typing operations.

.To economize space and to expedite action I provide a compact unit, designated feed roller unit. With the feed rollers I combine in close working relation, the cams to spread. feed rollers, the aligning means, the mechanism to release the carbon strips and webs from pressure against platen, feed roller actuating means and the finger part to operate means to free webs from pressure against platen. All of these are mounted on common hinged parts 5|. and all may be rocked away, as one, from their operating position to facilitate the threading of machines, and quickly returned to the operating position. The juxtaposition of the diflerent operating parts expedites action.

In the modified form to thread machine with paper webs, I provide idler 48 rotatably mounted on lower rear part of plate 4 at 48. By this provision paper webs 45 may be led in a more direct way under idler 48 and 48 to typing position and webs are more easily shifted to shift into align-' 88, pins 18 are made fast to mount loosely in opening H in end plate 4. The several openings 1I provide means to shift carbon strip 88 in order to use all of the strip. The metal part prevents tearing of carbon strips and paper webs while webs are being advanced. It is a practical and economical way to use cal -bon strips as the used strips may be replaced very quickly by new sections and the protection of carbon and paper webs against entanglementis valuable. In a modified form I provide means to advance carbon strips automatically as shown in Figs. 15, 16, 17 and 18. The arrangement of the carbon roll and support I1 are practically the same as in the main form except that the carbon roll and support are mounted to move horizontally on end plate 4 instead of up and down as in main form. The carbon roll support is fixed to a slide part 18 in slide track 11 fixed to end plates 4 and 82. On the end of platen carriage opposite carbon roll I provide carbon strip advancing gripper rolls 84 and 81 in a bracket 83 attached to end plate 4 at 82 as shown in Figs. 15 and 16. The studs 88 on ends of roller 84 are mounted in slotted opening 8| in the extending arms of bracket 88 and the studs on the ends of roller 81 are mounted in opening I in the same extending arms of bracket 83. Springs 88 to hold 84 and 81 in gripping contact, are fixed at one end to pins 85 on bracket 88 and the other ends of springs are fixed to ends of studs 88 of roller 84. The stud opening 8| in which roller 84 is mounted are slotted to allow gripper roller 84 to move from and toward roller 81 in gripping and spreading rollers.

To spread carbon strip feed rollers out of operating contact I provide cam 88 on the ends of bracket shaped parts 88 as shown in Fig. 15. Cam I bracket 88 is pivotally mounted on stud end of roller 81 at I85, with cams 88in loose contact with studs 88 on roller 84. The stud ends of the roller 81 project through bracket arm 88 sufficiently to mount bracket 88 close to the outside or arms v at bracket 88. Cam bracket 88 extends out from rollers 81 a distance suflicient to operate cams 88 to spread rollers which is necessary in the threading of machine with carbon strips and'adjusting carbon strips into the carbon strip advancing mechanism. By rocking cam bracket 88 forwardly cams 88 force roller 84 away from roll-' er 81. The part 88 on top of roller 81 is to manually operate rollers in adjusting carbon strips into strip advancing mechanism. To operate rollers 84 and 81 to advance carbon strips I provide part of I83 with turned up part I84 at one end and turned down part H8 at the other end. Part I83 is slidably mounted on lower part of platen carriage by fiat headed studs 84 through slotted openings I88 in I88. One end of springs 85 is attached to part I88 at I88 and the other end of spring is attached to platen carriage at H5 is mounted on bracket II2 to slide longwise of the bracket. The part II1 is pivotally attached to slide H5 at II8. Part II1 has a projection H8 and a part II8 turned rearwardly as shown in Fig. 15. The slide part H5 and the part II1 are provided to adjust carbon strip advancement mechanism to diiferent widths of forms to be typed. The adjustment corresponds to movement of platen in typing different widths of forms. The part II8 may be placed in any one of the notches Il8 desired which holds slide parts H5 and H1 against movement. Since part II1 is pivotally mounted, slide II5 may be manipulated by the projection II8 to lift part II8 out of notch I I3 to move slide H5 in either direction to place part H8 in the notchdesired. The projection H8 is in the path of H8 turned dqwn part of I83. When platen carriage is moved to its right extremity, part II8 contacts projection '8 which holds part I83 against further movement but platen carriage nioves a short distance further corresponding to length of slots I88 which moves ratchet wheel I8I into contact with pawl I84 causing rollers 84 and 81' to rotate slightly and to feed carbon strips a. short distance toward rear of machine. By this method fresh carbon is advanced along the type line as machine is operated. The carbon strip advancing mechanism is timed to correspond to the wear of the carbon. Part I83 is of flexible material so that pawl I84 may move into and out of contact with the ratchet I82. To-hold carbon strips in constant tension, I provide spring 88 attached at one end to 15, at 8| of turned out part of carbon support slide 18, and the other end of spring to stud 18 on end plate 4. Strips of carbon are led from carbon roll across machine interleaved between webs of paper and adjusted between gripper rollers 84 and 81. 'When gripper rollers 84 and 81 advance carbon strips the carbon roll support is drawn forward in slide track 11, but is limited in its forward movement by stud II I at the front end of track 11 as shown in Fig. 17 and limited in its rearward movement by turned out parts 14 of track 11. The spring 88 holds carbon roll support unit in normal position against rear limit of slide movement 14. The spring 28 holds carbon cover 82 on carbon roll II with frictional tension greater than the pull of spring 80, so the advancement of carbon strips during typing operation moves carbon rolls support unit forward in track 10 to front limit i I l and holds it there, and spring ll being drawn into tension holds carbon strips in constant tension against creeping or stretching. When 8 19- per rollers l4 and I1 are spread apart spring 8. draws carbon rolls support unit to its rear ward limit 14.

Having described my machine what I claim is: 1. In a tyewriting machine comprising a reciprocatory carriage and a platen mounted thereon, means carried by said carriage at one end of said platen for supporting a supply of carbon paper in strip form, means carried by said carriage at the other end of said platen to engage said carbon strip and move the same lengthwise of said platen and including a movable member, and means controlled by the reciprocation of said carriage for actuating said movable member.

2. In a typewriting machine comprising a reciprocatory carriage and a platen mounted thereon, means carried by said carriage at one end of said platen for supporting a supply of carbon paper in strip form, means carried by said carriage at the other end of said platen to engage said carbon strip and move the same lengthwise of said platen and including a movable member, an actuating member mounted on said carriage for movement therewith and having a part arranged to be brought into operative relation to said movable member as said carriage nears the end of its movement in one direction, and means for interrupting the movement of said actuating device with said carriage, whereby the movement of said carriage with relation to said actuating device will cause said movable member to be actuated by said actuating device.

3. In a typewriting machine comprising a reciprocatory carriage and a platen mounted thereon, means carried by said carriage at one end of said platen for supporting a supply of carbon paper in strip form, a feeding device carried by said carriage at the other end of said platen to move said carbon strip lengthwise of said platen and including a roller and a ratchet wheel connected with said roller, an actuating member mounted on said carriage for movement therewith, having a part arranged to be moved into operative relation to said ratchet wheel by the movement oi said carriage, and a normally fixed stop arranged to interrupt the movement of said actuating member while said part is in operative relation to said raLchet wheel, whereby the continued movement of said carriage will cause said ratchet wheel to move bodily with .relation to and to be actuated by said actuating member.

4. In a typewriting machine comprising a reciprocatory carriage and a platen mounted thereon, means carried by said carriage at one end of said platen for supporting a supply otcarbon paper in strip torm, a feeding device carried by said carriage at the other end of said platen and including a pair of rollers biased one toward the other and adapted to receive the carbon strip between them, means controlled by the reciprocation of said carriage for actuating said rollers, manually operable means for actuating said rollers, and means for separating said rollers to release said carbon strip.

5. In a typewriting machine comprising a reciprocatory carriage and a platen mounted thereon, means carried by said carriage at one end of said platen for supporting a supply of carbon paper in strip form, said supporting means being mounted for fore and aft movement with relation to said carriage, means for withdrawing said carbon strip from said supporting means and moving the same lengthwise of said platen. means for retarding the withdrawal of said carbon strip from said supporting means and thus causing said supporting means to be moved forwardly by said withdrawing means, and spring means tending to move said supporting means rearwardly.

6. In a typewriting machine comprising a reciprocatory carriage and a platen mounted thereon, means carried by said carriage at one end of said platen for supporting a roll of carbon paper in strip form, said supporting means being mounted for fore and aft movement with relation to said carriage, a feeding device at the other end of said platen, means controlled by the reciprocation of said carriage for actuating said feeding device to withdraw said carbon strip from said roll and move the same lengthwise of said platen, a spring to resist the forward movement of said supporting means, a retarding member, and a spring to press said member against said roll, the last mentioned spring being of greater strength than the first mentioned spring where- 

